eyeritt



(No Model.) 7 Sheets--Sheet. 1

P; EVERITT. AUTOMATIG GAS LIGHTING 0R EXTINGUISHING APPARATUS5- PatentedSept. 5, 1893;

Fig.1.

W'Zntsses.

(N6 Model.)

7 Sheets-Sheet P. EVERITT. I

AUTOMATIC GAS-LIGHTING 0R EXTINGUISHING APPA'R'ATUS.

No 504,447. Patented Sept. 5, 1893.

- nve lztan l.) 7 Sheets8heet 3.

P. EVERITT, AUTOMATIC GAS LIGHTING 0R EXTINGU ISHING APPARATUS.

No. 504,447. latented Sept. 5, 1893.,

15222 0/ 1 QIE IX, 1 .7

m I y f? u I 25 1" I 8 1/ J, b f;

WI; new;

(No Model.) 7 Sheets-Sheet 4.

P. EVERITT. AUTOMATIC GAS LIGHTING 0R EXTINGUISHING APPARATUS.

No. 504,447. Patented Sept. 5, 1893.

(No Model.) 7 Sheets-Sheet 5.

P. EVERITT.

AUTOMATIC GAS LIGHTING 0R EXTINGUISHING APPARATUS. No. 504,447. PatentedSept.'5, 1893-.

llnesses. v I entor.

(N0 Model.) I I 7 Sheets-Sheet 6.

P.- EVERITT.

AUTOMATIC GAS LIGHTING 0R EXTINGUISHING APPARAT'Us.

No. 504,447. Patented Sept. 5,'1893.

Wime 5s es. ,7 I I I jnwwr 8m 7 $4. @444;-

(No Model.) 7 Sh eetsSl1e et 7.

. P. EVERITT.

AUTOMATIG GAS LIGHTING 0R EXTINGUIS-HING APPARATUS. No. 504,447.Patented Sept. .5, 1893.

Wfiness es. Inventor:

UNITED STATES PATENT OFFICE.

PEROIVAL EVERITT, OF LONDON, ENGLAND.

AUTOMATIC GAS LIGHTING OR EXTINGUISHING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 504,447, datedSeptember 5, 1893.

Application filed December 2, 1891. serial No. 413,805- (No model.)

To all whom it may cancer-n5 Be it known that I, PEROIVAL Evnnrr'r, asubject of the Queen of Great Britain, residing at London, England,haveinvented a new and useful Improved Apparatus for Automatically Lightingor Extinguishing Street and other Gas-Lamps, of which the following is aspecification.

This invention relates to a novel and simple apparatus for automaticallylighting or extinguishing gas lamps at predetermined times.

In carrying out my invention I employ a clock movement suitably fixed orconnected to the lamp. The arbor of the hour wheel of the clock movementis provided with a pair of adjustable cams, adapted to operate upon asuitable clock in such a manner that as the cams revolve they raise aweight and at a certain predetermined time (which is regulated accordingto the adjustment of the cams) release it to operate the cock. By thisarrangement the gas of the lamp to which the appa-. ratus is appliedwill be automatically lighted or extinguished at predetermined timesaccording to the adjustment of the cams which are adapted to be revolvedby the clock once in twenty-four hours.

' It will be obvious that instead of employing weights, springs may beused.

To enable my invention to be fully understood I will describe the samewith reference to the accompanying drawings, in which- Figure 1 is afront elevation of apparatus arranged according to my invention. Fig. 2

is a plan, and Fig.3 is a sectional side elevation. Figs. 4 and 5 are aplan and sectional elevation respectively showing how'iny apparatus maybe, with advantage, applied to an ordinary street lamp. Figs. 6, 7 and 8are sectional elevations at right angles to each other and a sectionalplan of a modified form of apparatus suitable for street lamps.

Similar letters of reference indicate corresponding parts in the severalfigures.

(1. indicates a case containing the clock movement, and b is a plateconnected to the .said case through the medium of the pillars or blocksa, c and serving as a support for parts of the mechanism.

(1 is the arbor of the hour wheel of the clock mechanism, such arborpassing through the plate 12 and being carried at its outer end in abracket e secured to the said plate.

f is the gas supply pipe provided at its upper end with the ordinaryburner g and with a burner h fora pilot flame, and dis the cock forcontrolling the passage of the gas through the said pipe f and havingthe plug j, to which is secured a disk I: having upon it pins Z, Z.

we is the weighted lever for operating the plug j of the cock i, thesaid lever being pivoted to the plate I) at m and having connected to itthe pawl catch or hook nadapted to engage with the pins Z, Z.

0 isthe dial graduated for the twenty-four hours of the day and securedto the arbor d, and 19,10 are the cams by means of which the lever on israised. These cams are mounted upon the arbor d but are independentthereof and of each other, so that they may be adjusted relatively toeach other according to the timeat which the gas is to be lighted orextinguished and being independent of the arbor, may he slipped off andreplaced by others if desired. As shown in Fig. 1, the cams are set tolight the gas at 6 p. m. and to extinguish it at 4.15 a. m.

g is a screw which passes through slots in the cams into the dial 0 andthe tightening of which serves to hold the said cams in any position inwhich they may be placed.

The operation of the apparatus hereinbefore described is as follows,that is to say, assume the parts to be in the position shown in Fig. 1,then, as the arbor d rotates in the direction of the arrow the cam 19acts upon a pin r,'secured to the extremity of an arm' r upon the leverm, and causes the raising of the said lever whereby the catch at engagesshown in engagement in the drawings. When the highest part of the camhas moved beyond the pin r the weight on the lever m causes the saidlever to drop and the hook at to pull round the plug of the cock i,thereby allowing gas to pass to the burner 9 where it will be lighted bythe pilot flame; as the rotation of the arbor d continues the other camp gradually raises the lever m to engage the hook n with another pin,the lever being allowed to fall at a predetermined time ac- -with thepin Z above that with which it is cording to the setting of the disks,thereby shutting ofi the gas and leaving the pilot flame burning. Itwill be understood that the plug of the cock 1' is turned a quarter of arevolution at each downward movement of the lever m the movement of thesaid plug being always in the same direction.

8 is a weighted arm attached to the pawl n and serving to keepit incontact with the pins Z, and t is a spring catch or detent forpreventing the plug j from being rotated in a backward direction.

To prevent the plug of the cock 1' from being turned too far under theimpulse which it receives when the weighted lever m drops, I shape thehead of the hook at in such a manner that, when it has rotated the plugj to the required extent by the engagement with one of the pins Z, thenext following pin will come into contact with the head of the said hookand prevent any further rotation of the disk, as shown most clearly inFig. 1.

In the arrangement of my invention shown in Figs. 4c and 5, where theapparatus is applied to a street lamp, it will be noticed that the partsare arranged to work horizontally: in this case, instead of weightingthe lever m, I arrange in conjunction therewith a spring at, and,instead of the weight upon the pawl 01, I arrange the spring in thisarrangement also, the mechanism is shown as inclosed in a case to thelid of which is made remov able in order to aiford access to theinterior thereof for adjusting the positions of the cams.

In the modified form of apparatus for street lamps shown in Figs. 6, 7and 8 the general arrangement of the parts is substantially the same ashereinbefore described with refer ence to Figs. 4. and 5. In thismodification however the parts are placed Vertically and instead ofsecuring the cams p, p to a disk 0 upon the arbor of the hour wheel, Iarrange the said hour wheel itself to serve as the disk the said hourwheel which in Figs. 6 and 7 is indicated by the letter 0 being adaptedto rotate upon the arbor d fixed to the plate b. The earns 10 p arecarried upon the boss p 'of the hour wheel and adapted to be clampedthereon in any position in which they may be adjusted by a nut 10*. p isa screw introduced into the end of the arbor d to retain the hour wheel0 thereon. In this modification also the case w is provided witharemovable part to which is retained in position by a hook 10 at one sideand a spring catch 20 the case while the latter is upon the removablepart. to is an opening through which the key for winding theclockmechanism can be introduced the said opening being normally closed by apivoted cover to".

When my invention is applied to street lamps it is necessary that insome cases, for

instance in foggy weather, it should be possible to light or extinguishthe gas independently of the automatic mechanism, I therefore provide aby-pass around the cock '5 through which the gas may be allowed to passdirect to the burner, such by-pass in Figs. 4, 5, 6,7 and 8 is indicatedby the letter 00. 1 is a cock placed in this by-pass and provided with alever 2 by means of which the cock may be opened or shut by alamplighter in the ordinary manner. 2' Figs. 6, 7 and 8 indicates ascrew which I advantageously place in the gas passage for the pilotflame for controlling the supply of gas thereto.

It is obvious that the adjustable cams can be made to release the cookor valve, which latter is operated by a weight or spring previously'wound u p,-instead of the cams lifting the weight.

Having now particularly described and ascertained the nature ofmy saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. Apparatus for automatically lighting andextinguishing gas,-havin gin combination with a clock movement and withan illuminating burner and also with a pilot or lighting burner, twoeccentric cams on a common arbor and at any desired angle relatively toeach other, a re-acting or drop lever m. actuated by said cams, a pawlcatch or hook actuated by said lever, a stop-cock actuated by saidcatch, and a by-pass 00. around the cock, all substantially as setforth.

2. In combination, a clock movement, cams on a common arbor and at anydesired angle relatively to each other, means substantially as describedfor letting on and cutting 01f the gas, a bypass as around the cockthrough which the gas may if desired be allowed to pass direct to theburner, and a cock in such by-pass.

PEROIVAL EVERITT. Witnesses:

SAMUEL BROOKES, GERALD FITZALLAN BIRD.

